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Some selection criteria… Do file-format’s capabilities support required functionality? What is breadth of acceptance, adoption within larger community? (and/or, does institutional policy dictate a specific format?) Presence and quality of documentation (reference, examples and especially tutorials), API software, and community support? Contribution to investment, data life-cycle economics? What is the level of standardization? Adaptability of format to widely used conventions like CF 1.x, or other accepted convention(s)?